title: Minimally invasive magnetic resonance imaging-guided free-hand aspiration of symptomatic nerve route compressing lumbosacral cysts using a 1.0-Tesla open magnetic resonance imaging system.
abstract: OBJECTIVE
  To evaluate the feasibility of minimally invasive magnetic resonance imaging (MRI)-guided free-hand aspiration of symptomatic nerve route compressing lumbosacral cysts in a 1.0-Tesla (T) open MRI system using a tailored interactive sequence.
  
  
  METHODS
  Eleven patients with MRI-evident symptomatic cysts in the lumbosacral region and possible nerve route compressing character were referred to a 1.0-T open MRI system. For MRI interventional cyst aspiration, an interactive sequence was used, allowing for near real-time position validation of the needle in any desired three-dimensional plane.
  
  
  RESULTS
  Seven of 11 cysts in the lumbosacral region were successfully aspirated (average 10.1 mm [SD ± 1.9]). After successful cyst aspiration, each patient reported speedy relief of initial symptoms. Average cyst size was 9.6 mm (±2.6 mm). Four cysts (8.8 ± 3.8 mm) could not be aspirated.
  
  
  CONCLUSIONS
  Open MRI systems with tailored interactive sequences have great potential for cyst aspiration in the lumbosacral region. The authors perceive major advantages of the MR-guided cyst aspiration in its minimally invasive character compared to direct and open surgical options along with consecutive less trauma, less stress, and also less side-effects for the patient.
authors.affiliation: Department of Radiology, Charité-University Medicine, 10117 Berlin, Germany. mdb@charite.de
authors.forename: Maximilian
authors.initials: M
authors.lastname: de Bucourt
authors.forename: Florian
authors.initials: F
authors.lastname: Streitparth
authors.forename: Federico
authors.initials: F
authors.lastname: Collettini
authors.forename: Felix
authors.initials: F
authors.lastname: Guettler
authors.forename: Hendrik
authors.initials: H
authors.lastname: Rathke
authors.forename: Britta
authors.initials: B
authors.lastname: Lorenz
authors.forename: Jens
authors.initials: J
authors.lastname: Rump
authors.forename: Bernd
authors.initials: B
authors.lastname: Hamm
authors.forename: U K
authors.initials: UK
authors.lastname: Teichgräber
mesh_terms: D003560:Cysts / Q000150:complications / Q000601:surgery*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008161:Lumbosacral Region; D053783:Magnetic Resonance Imaging, Interventional / Q000379:methods*; D008297:Male; D010147:Pain Measurement; D013117:Spinal Cord Compression / Q000209:etiology / Q000601:surgery*; D013126:Spinal Nerve Roots; D013396:Suction; D016896:Treatment Outcome